Hello everyone as it's my first post. I recently rediscovered my Air 1 gathering dust for the past 3 years or so. To my surprise, one out of 3 batteries I had still works. Im going on a big camping trip soon and wanted to take it with me, therefore would like to ask you about 2 things: is there any way to get new oem batteries, cause I couldnt find them available? If not what are the best proven alternatives (aliexpress?) Other thing: is it possible to somehow charge these batteries on the go? Im gonna spend 7 days camping in a tent and wont have an access to any sockets in the meantime. Ideally Id take one battery and recharge it with powerbank if possible but in case its not possible I would take 3 fully charged ones. Thanks for your time